Model of airplane



MODEL OF AIRPLANE Filed April 9-, 1935 v INVENTOR ARMOUR ESELLEYATTORNEY BY MM Patented Oct. 20, 1936 UNITED STATES PATENT OFFICE."2;058,265 H .MobEL or AiRPLANE Armour FPSelle-y, Brooklyni'N. Y.anneal-tannins; 1935, Serial No. 15,373

' BCIaiins. o1.,35+s

This invention relates to new and :useful improvements in models ofairplanes, boats and rolling stock such as locomotives, 'pullman cars,

etc. 7

The invention has -for an object the makingof models, utilizing. sheets-01" buckram or other similar prepared fabric for the materialso'f themodels.

It has been discovered that sheets of buckram and other similar fabricmay be moistened and in the moistened state moulded into various shapesby heated dies. It has further been dis-- covered that when the heat ofthe dies evaporates the moisture, the buckram or similar preparedmaterial will maintain its moulded condition. It is-proposed toconstructthe various component partsof models and-to assemble these parts' intothe finished model.

With specific reference to an airplane model; it has been discoveredthat when constructed from buckram' or other similar material accordingto this invention it is tail heavy and for this reason it is proposed toprovide a novel arrangement at the 'motor portionnflthemodeltocounterbalance the tail weight known asa balancing ring.

Still further the invention proposes the construction of a model asmentioned which is simple and durable and which can be manufacturedandsold at a reasonable cost.

For further comprehension of the invention and of the objects andadvantages thereof, reference will be had to the following descriptionand accompanying drawing, and to the appended claims in which thevarious novel features are more particularly set forth.

In the accompanying drawing forming a material part of this disclosure:-

Fig. 1 is a plan view of a sheet of buckram or similar material after ithas been withdrawn from a mold, according to this invention.

Fig. 2 is a sectional view taken on the line 22 ofFig. 1.

Fig. 3 is a perspective view of an airplane model constructed accordingto this invention.

Fig. 4 is an elevational view of the motor portion of the model shown inFig. 3, seen as though looking in the direction of the line 44 of Fig.3.

Fig. 5 is a rear elevational view of Fig. 4, showing the back of themotor.

Fig. 6 is a sectional view taken on the line 66 of Fig. 5.

Fig. 7 is a fragmentary sectional view taken on the line of Fig. 3,showing in particular the method by which certain of the parts areoonnected together.

Fig. 8 is a vertical sectional view talker'i on the line '8-8-'of Fig.'3.

Fig. 9 is a perspective view-of a model'of'a'boa't constructed accordingto this invention.

Fig. 10 is a sectional view taken 'on the line Ill-40 of Fig. 9. p

The models, according to this invention, are made by moistening a sheetof buc'kram "m or other similarly prepared -fabric of one :or moreplies, and While in'the moistened state,-form'ing the parts of the modelby engagement 't her eof' into heated forming dies or nou'lds. The diesor moulds are not shown on the drawing'since they form no part'of theinvention and in the art' the' construction of forming dies is generallyknown.- Any of the universally'usediorming'dies, used in forming metalparts or molding mach or similar materials, may be used. Manyofthese-dies are provided with heating elements, and if notfthe dies maybehated in a suitable-oven-or iurnac'e. The material '10 is shown formedwith the 's'ide portions R and-L of the body of an airplane. The portionRrepresents'the right hand'sidethereof, and the portionL the left handside. It-should be noted that these portions are 'formed fromthesheetmaterial lll (see-Fig. 2,) and each of the portions is formed withsuitable raised and reces'sed parts 10 necessary in the bodyconstruction. For exampleQsuch parts fl0 may-be for ornamental purposesormay befoundatibn supports, etc., for receiving and holding of otherportions of the models. The parts R and L are formed at the front endswith a motor attaching base II..

In Fig. 3 an assembled model is shown formed from parts and includingthe parts ilustrated in Figs. 1 and 2. This model is shown provided withthe dummy motor I3 and the propeller l2. Preferably, the propellershould be constructed of wood as is customary in small airplane models.The blades of the propeller may also be constructed from the buckram.The motor I3 is constructed from buckram sheets or the like. Theaccessories such as the wheels I4 and the wheel pants l5 may or may notbe constructed from sheet buckram depending merely upon desire. A motorcowl It is formed with suitable ribs and is used to cover the motor IS.

The motor is illustrated in detail in Figs. 4-6, inclusive. It iscomposed of an annular shaped member l6 having a plurality of raisedportions l1 simulating the cylinders of the motor. Metallic pins [8 arearranged longitudinally across the front of the cylinders simulating therods which operate the valves of the cylinders. The annular member I6 isformed with a hollow crank case [9 which is engaged upon and secured tothe motor attaching base ll illustrated in Fig. 1. The crank caseportion I9 is formed with an Opening 20 adapted to receive a propellerbushing plug 2 I.

The propeller bushing wood plug 2| is inserted through hole 20 and intothe motor attaching base I I so that when the shaft 25 of the propellerI2 is inserted axially, the propeller is free to rotate. The other endof the propeller shaft 25 is formed with a wire loop 25' in which oneend of the rubber motor 26 is held. The other end of the rubber motor isengaged into a fixed hook 25*- at the tail end of the fusilage byopening a hinged door Ill The annular disc 22 is cemented on to annularshaped member IS. The annular section 23 is formed with a hollow concavesection with a channel opening at the top 214. This annular section 23is cemented to balsa annular disc section 22 on which member 15 is alsocemented. With this arrangement it is possible to counterbalance theheavy tail effect of the airplane model by filling with shot or sand24*, within the compartment 23 to counterbalance the tail heaviness ofthe model.

In Fig. 7 a detail is shown of the means used in connecting the parts ofthe body of the airplane together. A wooden strip 28 is cemented, pastedor glued, etc., along one edge of one part of adjacent edge of theadjacent part and is secured thereto also with cement, paste, glue, etc.In Fig. 3 the strips 28 are shown extending substantially the entirelength of the airplane fuselage and a buckram covering strip 29 is usedas a trimming over the joint edges. This method of securing the partstogether may be used for other parts of the model.

In Fig. 8 a buckram strip 30 is shown to be used as a hinge between theelevator 3| and aileron 32.

In Figs. 9 and 10 another embodiment of the invention has been disclosedwherein a boat 33 having a rear seat 34 and a sail 35 is shownconstructed from buckram or other similarly prepared material in afashion similar to the construction of the airplane model. The purposeof showing this boat is to bring out the fact that various objects maybe constructed embodying the features of the invention.

While I have illustrated and described the preferred embodiment of myinvention it is to be understood that I do not limit myself to theprecise construction herein disclosed and the right is reserved to allchanges and modifications coming within the scope of the invention asdefined in the appended claims.

Having thus described my invention what I claim as new and desire tosecure by United States Letters Patent is:

1. A model of an airplane for educational purposes consisting of ahollow fuselage, hollow wings, a hollow false motor, a hollow annulusattached to the back of said false motor, all of said parts beingconstructed of die formed sheets of buck-- ram, said hollow annulushaving an opening in its upper portion for the free addition or removalof ballast, whereby the ballast may be freely added or removed to teachthe art of balance.

2. A model of an airplane for educational purposes consisting of ahollow fuselage, hollow wings, and a hollow false motor constructed ofdie formed sheets of buckram, all of said parts being assembled, saidmotor having an annular member attached to its rear side and saidannular member being formed with an axially annular compartment having atop opening for free addition or removal of weights, whereby the art ofbalance in flying may be observed.

3. In a model of an airplane for educational purposes, a hollow falsemotor constructed of buckram and adapted to be supported on a body of anairplane, said motor comprising, an annular disc section adapted to givesaid motor needed rigidness, an annular shaped member fastened to saidannular disc section and formed with an opening, a propeller bushingblock adapted to engage said disc section within said opening, apropeller shaft engaging through said bushing block and adapted tosupport a propeller, raised portions on the front of said annular shapedmember to represent cylinders, metallic pins arranged longitudinally infront of said cylinder to represent the rods which operate the valves,an annular section formed with a concave section and a channel openingat the top is engaged on said annular disc section, and a motor cowladapted to cover said motor, said cowl being formed with a top openingabove said channel whereby ballast may be freely added to said concavesection or removed from said concave section to teach the art ofbalance.

ARMOUR F. SELLEY.

